1 . 在直角坐标系
中,经过点
,且关于
轴对称的曲线的方程是__________ .(填上正确的一个方程即可,不必考虑所有的情形)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448c0a5ee776d19ce8e42ac9a5fd27c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
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解题方法
2 .
,
,
是三直线,
是平面,若
,
,
,
,且__________(填上一个条件即可),则有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e632af72cc3090cdcc4e29d5424c6bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1491c75d35618aca149e838816d8490e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72d2a947e3fdc214d40a7d3f54679a73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e076b91a9178217532e11c496400e8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5761a99d102beff950627c9b6c8e66d.png)
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2021-09-11更新
|
439次组卷
|
5卷引用:陕西省宝鸡市千阳中学2019-2020学年高一下学期必修二模块检测数学试题
陕西省宝鸡市千阳中学2019-2020学年高一下学期必修二模块检测数学试题(已下线)8.6.2直线与平面垂直的判定定理(第1课时)(精讲)(1)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)(已下线)第12讲 8.6.2直线与平面垂直的判定定理(第1课时)-【帮课堂】(人教A版2019必修第二册)(已下线)8.6.2 直线与平面垂直【第一练】“上好三节课,做好三套题“高中数学素养晋级之路(已下线)13.2.3直线与平面位置关系(2)线面垂直的判定与性质(备作业)-【上好课】2021-2022学年高一数学同步备课系列(苏教版2019必修第二册)
名校
3 . 在平面直角坐标系中有两点
,
,若二次函数
的图象与线段
只有一个交点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a85dd382fa447b567a9de87cac1990d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302e421a250119f34d8f3c9928730490.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ae716e1168534de81763d2587257a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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真题
4 . 已知不等式
,其中
为大于
的整数,
表示不超过
的最大整数.设数列
的各项为正,且满足
,
,
,….
(1)证明:
,
,…;
(2)猜测数列
是否有极限?如果有,写出极限的值(不必证明);
(3)试确定一个正整数
,使得当
时,对任意
,都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25b3e09305464f532ebd9c030851b4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a93e80e9b45f0ab3b3c67f72a9e32a01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bb87deb79a7ccdc02a991fa2788145f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/027ff3b50b4e770367c35231c6e4cf95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/832fede938e085a2247e540f0f843135.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d8978869e64ccf247c75fc6a3c71981.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6cde483f0bf2f20adfda6ba91e305b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dbe0909ff7ada1fd4a919abb847c4f8.png)
(2)猜测数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)试确定一个正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1563da7b0f046a469476668a3686e8f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57313fdbae9b8e7d8b7f17423a037361.png)
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